Updated Collision Risk Model Priors for Estimating Eagle Fatalities at Wind Energy Facilities

The U.S. Fish and Wildlife Service (Service) uses a collision risk model (CRM) to predict the number of golden and bald eagles that may be killed at new wind facilities. The model incorporates existing information on eagle exposure and collision probability in the form of prior distributions (priors). The Service has updated the priors for both species of eagle and, on June 21 of this year, announced the availability of a report of the analysis conducted to generate the new priors (83 FR 28858). The notice solicited public comments on how the Service should use the new bald eagle priors. Today's notice reopens the comment period for 30 days, and provides additional information requested by commenters.